What old cluster bomb was the CBU-105 converted from?

The CBU-105 was developed as an enhanced version of the CBU-97 cluster bomb. The design of the CBU-97, which was itself an earlier generation of the cluster bomb, was utilized to create the CBU-105. This modification included improvements such as advanced guidance systems, allowing for greater accuracy and effectiveness in targeting. The CBU-105 features technologies that enhance its precision in delivering submunitions, which sets it apart from its predecessor. By adapting the CBU-97's structure and components, the CBU-105 addresses some limitations found in earlier cluster bombs, making it a more effective and reliable weapon system.